manualdh96cpp eng rev b · dh96-cpp kyz dh96-cpp wh wh ram dh96-cpp ... disconnect its load when...

PageChapter 1

Device information

Chapter 2

Chapter 3

Introduction 234

Dimensions 5

1213131415161820

Technical specificationsSafety warnings

Input typesWiring diagramsPlug-in cardsModification of the auxiliary voltage

Integration typesDemand controlVariables to visualizeKeyboard functionsProgramming introductionDevice configurationRelays control by levelForecast control of the relays

Installation and startup

Programming

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Index

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PN: 430025003 revB

In the industry, a higher powerconsumption than the contracted one canlead to severe penalties. Often there arepower peaks produced by loadscoincidence that normally do not work in asimultaneously. In order to avoidpenalties, one solution would beincreasing the contracted poweraccording to the maximum registeredpeak, but on contrast this will force to paya higher power than it is really needed.

Another solution will be avoiding theconsumption peaks through a vigilanceelement that advise us of the risk situationor it can disconnect certain dispensableloads ( air conditioning, compressors,lighting...)

The new has beendesigned especially for the control ofpower demand through energy pulses. Bymeans of this equipment, the consumedpower during an integration period can becontrolled, depending on the energypulses that arrive to the energy meterfrom the utility.

To achieve this the hasup to 4 relays to connect and disconnectthe required loads in the most optimumway or activating an alarm that informsus about this situation.

The equipment calculates the energydemand, peak, its medium value, andconsumed. The peak and mediumdemand values as well as consumedare saved in a non-volatile , avoidingthis way its lost when the auxiliary supplydrops

The instrument has 4 digitsand 8 indication red colour leds. Theequipment parameters are configurableby means of 4 frontal keys.

DH96-CPP

KYZ

DH96-CPP

Wh

WhRAM

DH96-CPP

The has been designed tooffer a wide range of features andperformance qualities in a compact and atthe same time robust equipment thatallows to work in industrial atmospheresunder all requirements of applicablestandards.

Instruments of Series have beentested in laboratories, checked inindustrial environments, and havesuccessfully passed the most rigoroustests involving ambient conditions,electrical noises, electromagneticdisturbances, mechanical vibrations,etc...

The instrument has an additionalcommunications card that

whenever it is required can beincorporated in the device.

Through this card and by means ofprotocol, mode, we will be

able to:

Check the relays state, connect anddisconnect them whenever is needed.Read all measuring parameters:demand, totalizers, peak and mediumvalues, and reset them.Visualize and modify the programmingparameters.

MODBUS communications protocol.Instrument address selection.Communication speed selection 1200,4800, 9600 and 19200 bits/s.Parity selection: even, odd or without.Stop bits selection: 1 or 2.

DH96-CPP

DH96

Expansion options

RS232/485

MODBUS RTU

Card with RS232/485 output

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IntroductionC

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Auxiliary supply:

Display :

Input circuit:

Isolation:

Environmental conditions

General characteristics

Relays features 1 single contact

Design standards:

IEC 1010 / IEC 348 / IEC 664 / EN50081-2 / EN50082-2 /ANSI C12.5-1978/ UL508/C22.2 No 14 / VDE0435

Rated value: 115V or 230 V a.c. / 24 or 48 V a.c.(-15 %, +20 %)

Frequency range: 45 to 65 HzBurden: 4 VA (without optional card)

7 VA (maximum burden)

7 segments14 mm high 4 digitsHi-efficacy red colourOverrange indication "----"8 indication LEDProgrammable decimal point

Free contact:Vc 5 VRc 3,9 k

TTL / 24V:Rc 47 kLogic Level 0 < 2 VLogic Level 1 > 3 V

NPN or PNP sensor:Rc 2 kLogic Level 0 < 2 VLogic Level 1 > 3 V

Between the input circuit, the measuring circuit and the output measure-relay, RS 485 /232Test voltage: 3 kV RMS 50 Hz during 1 minPulses test: 4 kV (1.2/50 µs)

:

Storage temperature: -40 ºC to +70 ºCOperation temperature: -10 ºC to +65 ºC

:

Dimensions: 96 x 48 x 138 mmWeight: 550 gCase material: ABS V0, anthracite greyProtection degree: Frontal: IP 54

IP 65 with frontal protectCase: IP 20Terminal: IP20

:

Rated A.C. current : 5 AMaximum A.C. current: 250 V a.c. 50 HzMaximum resistance load: 750 VAIsolation resistance 500 V: > 1000 MContact-coil isolation: 2000 V c.a.Contact-contact isolation: 750 V c.a.Mechanical endurance: > 20.000.000 operations.Electrical endurance: > 30.000 operations at 5 A. and 250 V

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Technical specifications

Information and warning texts

Installation

¡Warning!

The DH96 meets protection class I:

It is provided with earth terminal.The case is not dangerous to tactiletouching (isolation material)Screws of terminals are notaccessible for human appendix.

This instrument has been designedand tested to meet IEC348 standard andis supplied in proper conditions. Thismanual contains information andwarnings that the user should respect inorder to guarantee a proper operation ofall instrument's functions and keep itssafety conditions.

The instrument is for indoor use. Itcould be occasionally subjected totemperatures between -10 ºC and +75 ºCkeeping its safety conditions.

The instrument must not be poweredand used until being correctly assembledon the board.

Before powering the instrument, itsearth terminal must be connected to asuitable protection cable.

Any interruption of the protectionconductor, either inside or outside theinstrument, or the disconnection of theprotection earth terminal might imply adangerous situation; therefore, anyintentional interruption is whollyforbidden.

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Adjustment, spare parts andrepairing actions.

Defects and malfunction

With the instrument powered on, theterminals could be dangerous to touch andcover opening actions, may allowaccessing dangerous parts. Therefore,before any adjustment, replacement,maintenance or repairing operation iscarried out, the instrument must beswitched off from any power supply source

No adjustment, maintenance orrepairing operation should be done overthe instrument opened and powered, andif they are essential, high-qualifiedoperators must perfom them.

Check that fuses used for replacingdamaged ones match required types andrated currents. Unsuitable fuses or short-circuit fuse bases must be completelyforbidden.

When any protection failure issupposed to exist, the instrument must beput out of service. The protection can bedamage whether:

You can see visible damages.I t c a n n o t p e r f o r m p r o p e rmeasurements.Storage conditions were not thesuitable ones.Any damage in transport happened.

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Safety warnings

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Dimensions

45

92

+0

,8

+0,6

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Panelcut-

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Input types

Utility meters generate output pulses with type C contact, known as pulses,where each contact is a pulse.

The uses type two wires contact, this can be obtained from typeusing either or only.

KYZ

DH96-CPP A CKY KZ

AC o DC

K

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Pulse generatorReceiver

Pulse KYZ form C

AC o DC

K

Y

Pulse generatorReceiver

, Z

Pulse KYZ form A

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Input types

For it, the will count a pulse whenever the position of the contact should bemodified, it's means, in every change of level.

DH96-CPP

The admits, for each of his two inputs - and- the connection through:

Free potencial pulses,Pulses by level of voltage (TTL/24V),NPN or PNP sensors.

The conexion type will be selected by means of the on-board microswitches, SW. Foraccessing these microswitches the box must be opened according to indications in thepage 10

Once these microswitches have been located, select the transducer to be used justfollowing indications attached in the table.

Note: The instrument is factory shipped for the use a free potencial pulses.

DH96-CPP KYZ synchronism inputpulses

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( ).Plug-in cards

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1

3V < level 1 < 24V

Wiring diagrams

1.- Connection for free potential pulses,

2.- Connection for pulses by level of voltage (TTL/24V),

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(AUX) 12V

(IN3) Synchronismor(IN2) KYZ P.

(IN3) Synchronismor(IN2) KYZ P.

(COM) GND

PNP

NPN

Wiring diagrams

3.- Connection for NPN sensor

4.- Connection for PNP sensor,

Cards: Connection of relays

4 relays:

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WARNING

Proceed as pictures show below:

: Insure that no incomingwire is connected to the equipment beforedoing any manipulation work on theequipment, since observed failure in theequipment can provoke equipmentdamages and even serious injury.

1) Press the case holding piece with ascrewdriver or a similar tool in order torelease the base from the rest of the case.

2) Remove the set composed by thebase and circuits by pulling the base andcarefully sliding it out.

3) Insert the card into the suitableconnector. Take care that only theconnector is pressed but not all the card.

4) Put the set composed by the baseand circuits in, again, by pushing the baseand carefully sliding it inside. When the setis totally inserted, press until the caseholding pieces are fitted into the pertinentholes.

Plug-in cards

1)

2)

3)

4)

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The instrument is manufactured to besupplied with 230 V a.c. But it is possible tochange to 115 V a.c. Following theinstructions below mentioned:

To perform this modification, open theinstrument case (see page 10 "

") thoughtfully following all(see page 4), and identify the

zone referred to picture 1.

For an auxiliary supply of 230 V onlythe jump labelled as 1 must be done (fig. 2)

On the contrary, if an auxiliary supply of115 V is required, only jumps labelled as 2and 3 must be done (fig. 3).

plug-incards safetywarnings

Modification of auxiliary voltage

fig. 1

fig. 3

fig.2

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The can be programmed inorder to operate in 4 different integrationmodes:

1 - Synchronised with the utilitymaximeter, through synchronism pulsesthat are given in each period initiation( ).

2 - Synchronised with the utilitymaximeter, by means of synchronismpulse. ( ). From thispulse, the equipment calculates the startsand ends of each period based in aninternal clock. When a new pulse isreceived, it will be re-adjusted and it will besynchronised again.( It is recommendedto receive one synchronism pulse each 24hours.)

3 - Without synchronism with the utilitymaximeter, using a sliding window( ).

4 - Without synchronism with themaximeter, using a sliding window andsimulating the response of the thermalexponential function of the mechanicalmeters ( ).

DH96-CPP

Block demand Pulse

Block demand Time

Rolling demand

Thermal demand

Example:

ThermalDH96-CPP

Following the graph you can observethe behaviour of the device in the 4operation modes, for an integration periodof 5 minutes.

For synchronised operation mode (block demand pulse and block demandtime ) and Rolling (sliding window) thedevice will reach up to the maximum valueof the demand, in this case 36 kW, at theend of the integration period (5 minutes).

For operation mode, thewill get up to 90% of the

maximum demand value at the 5 minutes,and up to 99,9 % at 10 minutes.

Demand

0

6

12

18

24

30

36

42

0 100 200 300 400 500 600

time (second)

Kw

block pulse, block time, rolling thermal

Integration types

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Demand Control

This device has two operation modesin order to getting the relays control:

, for Rolling,Thermal, Block demand pulse and Blockdemand Time operation modes.

, for Block demandpulse and Block demand Time operationmodes.

If the option of hasbeen chosen, we will program the valuefor each one of the relays that we want todisconnect its load when the demandvalue exceeds it. In this option, we will beable to introduce delays in the relay'sdisconnection, in the connection,hysteresy, latch option, failure security...for each of the programmed loads.

-Control by level

-Predictive control

control by level

Variables to visualize

The DH96-CPP is based on amicroprocessor, that calculates from KYZpulses the following parameters:

- (kW), in any of the 4calculation programmable modes

, it is themaximum value of the demand it has beenreached.

- , it isthe average of demands reached inthelast 32 integration periods.

This value is visualized for thesynchronised operation modes only. For a15 minutes of integration period it will bethe average of the lat 8 hours.

- . It exists threetotalizers than can count up to999,999,999 Wh.

Energy demand

Peak value of the demand

Medium value of the demand

Consumed Wh

-

In the , connectionand disconnection of the loads will bemade by means of one algorithm thatoptimises the number of manoeuvres andguarantees the contracted power cannotbe exceeded, provided that theprogrammed values are the ones thatreally are in the installation. In order toachieve this, we must program thecontracted power from the utility and theindividual power of each load that we willlink to the .

If the 4 existing relays are not used, the4 relay acts like an alarm, it activates itselfwhen al l the loads have beendisconnected.

predictive control

DH96-CPP

th

Peak and medium demand values aswell as the totalizers are saved in anon-volatile memory, that can bedisplayed whenever it is required,avoiding the lost of the same if theauxiliary supply drops. This system doesnot require any maintenance.

totalizers, medium and peakvalues, can be reseted whenever it isneeded.

WhRAM

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Demand control, Variables to visualize

Programming

Visualization

Totalizers visualization /peak and medium values

Totalizer's / peak andmedium values reset

By pressing this key, we will accede toprogram menus of the several parametersthat can be defined. Once inside thismenu, its function will be validatingselections.

This key allows to display and changefrom demand to totalizers visualization.

If we are visualising the demand, wewill be able to see the peak and themedium value by pressing this key.

If we visualize totalizers, we will beable to display cyclically the threetotalizers: A totalizer (from 0 up to 999MW), B totalizer (from 0 to 999 kW) and Ctotalizer (from 0 up to 999 W).

For instance: If the totalizer's valuesare: A:357, B:027, C:146 the totalconsumed Wh is: 375,027,146 Wh.

If we are visualising the demand, wewill be able to reset the peak and mediumvalue, by pressing this key during morethan 5 seconds. If we are visualisingtotalizers, we reset their values.

Default values

Password

DH96 CPP

CE YESNO

NO

YES

Pressing both keys at the same time,during more than 5 seconds, theequipment deletes all configurationparameters, restoring the defaultparameters.

Pressing both keys at the same time,when we switch on the instrument, we willbe able to introduce a 4 digits password.The function of this password is to forbidthe access to the configuration menus ofthis device. For deleting this effect, youmust re-start the equipment, and you mustpress both keys at the same time. Afterintroducing the previous password, youwill have access to the menus again.

The introduction of thepassword, either for protection the accessto the menus or deleting its protectionmust be done twice, the first time for itsdefinition, and the second one for confirmit. If the second time does not coincideswith the first, the devices considers it is amistake, and it goes on with its startingroutine.

Besides, in the we haveanother security level against parameters'modification. At the end of each menugroup appears the feature, withand options.

For instance, if we have programmedthe equipment configuration and wechoose , when we accede into thismenu again, we will not be allowed tomodify any parameter, and it will berequired to enter into this option again andactivating it with .

Remark:

Keyboard functions

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DH96 CPP configuration is easy,intuitive and makes the user familiar with it, allowing whenever he requires, withoutusing the manual, the modification of thedifferent programming instrument'sfeatures.

By means of a program menu,disposed in a tree mode, he can programall the equipment's operation in a logicalway.

The steps to follow are:

1) Firstly the user will program thedevice's configuration, where he will beable to settle: the energy that belongs toeach pulse, operation type, integrationperiod, decimal point position, andoperation mode.

2) Following on, if there is a relayscards and we have programmed thedevice in operation mode, we willchoose the control type of the relays:relays control by level or predictivecontrol.

3) Finally, we will program the relays'configuration Menu that appears dependson previous selection.

Block

Programming introduction

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Device configuration

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Programming of one value

NOTECE

YES

:To step from one digit (4 digits) to another, press the following keyTo modify the value of the selected digit press repeatedly the keyBy means of the two keys we will define completely the 4 digits of the value.

:If you see that it is impossible to change these values, go to the option and checkthat it is programmed with ( ).To validate the values, remember that the key … should be pressed repeatedly, untilyou arrive to the measured value.

Energy pulsesThe energy value in Wh belonging to each KYZ pulse is introduced.

Integration type

Integration period

Decimal point

Working modemaster

slave

Configuration enabled

Relay control

(

The integration type of the device is determined in this section :

Synchronised with the utility's maximeter,

-through synchronism pulses that are given in eachperiod start.(Block demand pulse)-by means of a synchronism pulse.(Block demandtime)

Without synchronism, using a sliding window.

Without synchronization, using a sliding window and simulatingthe response of the thermal demand (exponential).

Here you are introducing the integration period in minutes (from 1 to 60). In thethermal mode, it is the period in which we want to have the 90% of the finalvalue.

We select the position of the decimal point to display the instantaneousdemand.. Pressing the ...... key we are varying the position of the decimalpoint.

We select the working mode of the DH96, in mode the unit iscontrolling the relays, in mode the user controls the relays by modbus.

If the user programs the device as (No) it disables the modification of theprevious parameters and as (Yes) it enables the modification.

This option appears only if we have programmed the synchronization modeor ).

The device has two working modes to control the relays:

control by level,

control by forecast.

The menu to configure the relays depends on this selection.

block demand pulse block demand time

Device configuration

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Relays control by level

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Number of relays

Value of the alarm

Hysteresis

Delay on the disconnection

Delay on the connection

Latch

Security failure

YesNo

Configuration enabled

NoYes

We select the number of relays that we will use.

For each of the relays, we will program the following parameters:

We introduce the value of the instantaneous demand which will trip thecorresponding alarm.

The value of the alarm 1 should be the smallest one, and therefore:alarm1 < alarm2 < alarm3 < alarm4.

Introduce the desired difference between the connection point and thedisconnection point of the load in % (minimum 4%, maximum 50%)

Introduce the delay that there will be between the time in which the alarmlevel has been reached and the time the relay is disconnected. (in seconds).

Specify the delay that there will be between the time in which the alarmdisappears and the time in which the relay is connected again (in seconds).

We are specifying in this option if we wish to latch the relay once the relayhas tripped even though the alarm condition might disappear.

We can choose over here between a normally close relay ( ) or normallyopen ( ).

Programmed in ( ) it disables the modification of the previous parameters,and in ( ) it enables the modification of them.

Relays control by level

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Forecast control of the relays

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Contracted power

Number of relays

The delay in the connection

Type of connection / disconnection of the relays)

cyclical

linear,

Transient time

Power

Security failure

YesNo

Configuration enables

NoYes

We introduce the value of the contracted maximum demand with the utility(in kW)

We select the number of relays that we will use.

Specify the delay that there will be between the time in which the alarmdisappears and the time in which the relay is connected again (in seconds).

We can select among the two different types of connection / disconnection.

- , where we disconnect first the relays that have beenconnected for a longer time

- where the connection and disconnection is made bypriorities. ( the relay 1 is the first one to be disconnected).

Depending on the load on the installation, we can have transient quickvariations on the power (for example installations with a lot of inductive load)but which should not cause an inmediate action by the controller. By meansof the transient time, we can adjust the response time of the controller to thecharacteristics of the installation.( in seconds).

For each of the relays, we introduce the power that each of the relayscontrols (in kW).

We can choose over here between a normally close relay ( ) or normallyopen ( ).

Programmed in ( ) it disables the modification of the previous parameters,and in ( ) it enables the modification of them.

Forecast control of the relays

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Notes

manualdh96cpp eng rev b · dh96-cpp kyz dh96-cpp wh wh ram dh96-cpp ... disconnect its load when...

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